Function parse_bytea_element

cpp/deeplake_pg/utils.hpp:439–449

// Helper function to parse a single bytea element as a number
template <typename T>
inline bool parse_bytea_element(bytea* b, T& value)
{
    if (b == nullptr)
        return false;

    const char* data = VARDATA(b);
    size_t len = VARSIZE(b) - VARHDRSZ;

    auto [ptr, ec] = std::from_chars(data, data + len, value);
    return ec == std::errc{};
}

inline Datum make_special_datum(Oid table_id, int64_t row_id, AttrNumber column_id, Oid attr_typeid)
{